2136:: Stereoviews: 1918 WWI Anti-Aircraft Machine Gun Emplacement. Keystone, #18612 (series #41).

2136:: Stereoviews: 1918 WWI Anti-Aircraft Machine Gun Emplacement. Keystone, #18612 (series #41).
Caption reads “Shooting German Airplanes — Aircraft Gun Concealed in the Woods”.
Standard size, curved, black and white, verso text.

USA 1918 c.Reference number: 2021.2136